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Subject: RE: [worldcruising] Doctors, please explain
From: Barry Brazier (barryb@XXX.XXX)
Date: Tue Feb 20 2001 - 23:44:15 EST
A barrier cream has to have an absorbent of some kind. Any molecule that
absorbs UV has to be reactive. If one cream uses a different absorbent it
may be just as bad. Just means no one has tested it.
Generally the testing required to permit a chemical in cosmetics is
exhaustive. Toxic materials can be allowed at appropriate levels based on
anticipated usage.
For a sailor out in the sun all day the amount needed to be applied over the
day for several days may be too much of any absorbent. Even one with no
current bad history.
Barry
-----Original Message-----
From: Plottier [mailto:arthur@XXX.XXX]
Sent: Wednesday, 21 February 2001 2:38 PM
To: worldcruising@XXX.XXX
Subject: RE: [worldcruising] Doctors, please explain
Hi Barry,
Appears that you do not understand the point!!!!
Why few companies offer the option of producing and selling the barrier
creams without the chemicals absorbents?
If they are doing the same job, get rid of the ones with chemicals and
inform the people why!!
That's the point!!
Cheers
Arthur
At 09:16 AM 21/02/01 +1100, you wrote:
>Every thing we eat and drink and apply to our skin contains poisons.
>There are far more naturally occurring toxins in natural material than in
>there are added. At least the commercially added stuff is tested.
>You cannot live with out low levels of exposure to toxicity.
>With the right test you can kill cells with carrot extract.
>Here in Australia we have one of the highest rate of skin cancer.
>Sun screen is definitely a must in exposed skin.
>All creams will have something in them to be effective so the best action
is
>to minimise the use by covering up as much as possible.
>When sailing over seas it is often said you can tell who are the Australian
>by the way the wear long sleave shirts and hats while all the Europeans are
>as exposed as possible
>
>Barry
>M.Sc., M.Phil (London)
>Lecturer Biochemistry
>
>-----Original Message-----
>From: arthur@XXX.XXX]
>Sent: Wednesday, 21 February 2001 8:48 AM
>To: worldcruising@XXX.XXX
>Subject: [worldcruising] Doctors, please explain
>
>
>Hi,
>
>As we all know sun cancer is a problem that concern all of us and we
>look for "proteccion" as recommended by the people that know about
>this subject.
>
>We believe on them an carry on sailing.
>
>Cheers
>Arthur
>
>The other day selecting a sun barrier cream I notice that there are
>two types: one without chemical absorvents and the other (the most
>popular)without comments about "absorvents"
>
>After done same research on the Net I come with the attached *.doc
>
>Please read it and Drs. in the group explain to us about it. Looks to
>me that it is not "plain sailing"04 Oct 00 - Food Safety -
>Sunscreens 'may be toxic'
>BBC
>
>BBC News ... Wednesday 4 October 2000
>
>A chemical used in most sunscreens to protect against skin cancer
>could damage human cells , according to a study.
>
>Research carried out in Norway found that octyl methoxycinnamate
>(OMC), which is used in 90% of sun creams to protect against ultra
>violet rays, could be harmful if it seeps into a person's blood
>stream.
>
>The scientists based their findings on tests they carried out on mice.
>
>They added small concentrations of the chemical to an ethyl alcohol
>solution containing mouse cells.
>
>They found that while over 90% of the cells survived when put in this
>solution, half were killed when the OMC was added.
>
>They then place the solution under a lamp for two hours to simulate
>the effects of the chemical in sunshine.
>
>Under these conditions, the chemical was found to kill even more
>mouse cells.
>
>The scientists, from the Norwegian Radiation Protection Authority,
>suggest that this is because the chemical becomes twice as toxic when
>it comes into contact with light.
>
>They add that the chemical could damage human cells if it penetrates
>the skin and warn the public only to use sunscreens that contain OMC
>when they have no other choice.
>
>But the findings of the study have been dismissed by the Cosmetic
>Toiletry & Perfumery Association, which represents sunscreen
>manufacturers in Britain.
>
>OMC has been approved for use as a sunscreen for many years and has
>been thoroughly tested for safety said a spokeswoman for the Cosmetic
>Toiletry & Perfumery Association, the findings could not be applied
>to people who use sunscreens normally.
>
>She added that the chemical had been "thoroughly tested" and was
>approved by authorities in the UK and US.
>
>"OMC is approved and listed in the Cosmetics Directive and is also
>approved in the Food and Drugs Administration Sunscreen Monograph in
>the USA as a safe and effective sunscreen.
>
>"OMC has been approved for use as a sunscreen for many years and has
>been thoroughly tested for safety."
>
>Advice Dr Charlotte Proby, a consultant dermatologist with the
>Imperial Cancer Research Fund said: "It is difficult to extrapolate
>from laboratory experiments in mice to humans out in the sun.
>
>"Undoubtedly the best advice is to avoid the sun and cover up with
>clothing, and wear a hat and sun-glasses.
>
>"However, using sunscreens to prevent sun damage to cells is likely
>to reduce the risk of skin cancer development, and is far better than
>not using any sun protection at all."
>
>
>
>
>
>
>
>
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>
>___________________________________________
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>The First Choice
><http://www.angliss.vic.edu.au>http://www.angliss.vic.edu.au
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